Which function is a quadratic function?

u (x) = - x + 3x2 - 8

v (x) = 2x2 + 8x3 + 9x

y (x) = x2 + 3x5 + 4

z (x) = 7x2 + 2x3 - 3

What is the vertex of a circle in the equation of a circle?

A container holds 8 gallons of water. If 4/5 of a gallon is added to the container each hour, how many hours would it take to fill the container?

Jules has 1200 and is spending 40 per week. kelsey has 400 and is saving 50 a week. in how many weeks, will jules and kelsey have the same amount of money?

How does march and november share consistent days on similar dates

The median price, P, of a home rose from $50 thousand in 1980 to $150 thousand in 2000. Let t be the number of years since 1980.

The price of a cup of coffee has risen to $2.70 today. Yesterday's price was $2.45. Find the percentage increase. Round your answer to the nearest tenth of a percent.

Solve the equation ax+b=c for x

How to understand money creation in terms of economics?

Whats the rule for this pattern, 3,1.5,0,-1.5,-3

Chang rented a truck for one day. There was a base fee of $17.95 , and there was an additional charge of 85 cents for each mile driven. Chang had to pay $211.75 when he returned the truck. For how many miles did he drive the truck?